Bundle of 4 items: Fenix TK16 1000 Lumen LED Flashlight w/ AER-03 Pressure Switch, Offset Mount & 2x CR123A Batteries Incredibly powerful maximum output of 1000 lumens with 262 yard beam throw Reverse polarity protection, to protect from improper battery installation and digitally regulated output maintains constant brightness Reliable dual-layer body made of durable aircraft-grade aluminum, premium type III hard-anodized anti-abrasive finish and toughened ultra-clear glass lens with anti-reflective coating Intelligent Memory Circuit remembers last brightness level used when turned on as well as tactical tail switch for momentary-on function and instant Strobe mode Included batteries as well as Fenix brand AER-03 Pressure Switch and offset rifle mount for hunting and tactical purposes